CN220577887U - High-toughness high-barrier co-extrusion composite packaging bag for corn packaging - Google Patents
High-toughness high-barrier co-extrusion composite packaging bag for corn packaging Download PDFInfo
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- CN220577887U CN220577887U CN202322246894.XU CN202322246894U CN220577887U CN 220577887 U CN220577887 U CN 220577887U CN 202322246894 U CN202322246894 U CN 202322246894U CN 220577887 U CN220577887 U CN 220577887U
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- packaging bag
- nylon
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- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 48
- 235000002017 Zea mays subsp mays Nutrition 0.000 title claims abstract description 44
- 238000001125 extrusion Methods 0.000 title claims abstract description 41
- 240000008042 Zea mays Species 0.000 title claims abstract description 38
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 title claims abstract description 38
- 235000005822 corn Nutrition 0.000 title claims abstract description 38
- 239000010410 layer Substances 0.000 claims abstract description 111
- 239000004677 Nylon Substances 0.000 claims abstract description 52
- 229920001778 nylon Polymers 0.000 claims abstract description 52
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 23
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims abstract description 16
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000004840 adhesive resin Substances 0.000 claims abstract description 12
- 229920006223 adhesive resin Polymers 0.000 claims abstract description 12
- 239000012793 heat-sealing layer Substances 0.000 claims abstract description 12
- 238000007747 plating Methods 0.000 claims 1
- 230000004888 barrier function Effects 0.000 abstract description 10
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 239000006173 Good's buffer Substances 0.000 abstract 1
- 241000482268 Zea mays subsp. mays Species 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000004594 Masterbatch (MB) Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- -1 Polyethylene Polymers 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920006284 nylon film Polymers 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010096 film blowing Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 235000019605 sweet taste sensations Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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- Laminated Bodies (AREA)
Abstract
A high-toughness high-barrier co-extrusion composite packaging bag for corn packaging relates to a high-toughness high-barrier co-extrusion composite packaging bag. In order to solve the problem that the existing fresh corn package is easy to leak air. The bag body of the high-toughness high-barrier co-extrusion composite packaging bag for corn packaging is a co-extrusion composite film, and consists of a first nylon layer, a second nylon layer, a nylon layer with a silicon dioxide coating, an EVOH layer, a bubble film layer, a yellow mother material layer, an adhesive resin layer and a heat sealing layer. The bag body of the packaging bag has good puncture resistance, flexibility, tearing resistance and high barrier property, also has good buffer performance and ultraviolet blocking function, is more attractive, can prolong the shelf life of the product, and can keep fresh for 12 months.
Description
Technical Field
The utility model relates to a high-toughness high-barrier co-extrusion composite packaging bag.
Background
The sweet corn comprises fruit corn or vegetable corn, and the planting area of the sweet corn in China reaches 33.3 ten thousand hours.m 2 About 25% of the whole sweet corn area, and the sweet corn has a sweet taste, rich nutrition and wide application, is popular with consumers, and always occupies a place in the fruit and vegetable market. At present, the packaging of the preservative film is a main mode of preserving the picked sweet corns, the common preservative film on the market comprises a Polyethylene (PE) film, a polyvinyl chloride film and a polyvinylidene chloride film, and the polyethylene film is widely applied due to sufficient raw materials and low cost. The proper fresh-keeping film is selected to reduce the respiration rate of sweet corn, delay senility, soften and rot and prolong the storage period. For example, the more commonly used co-extrusion composite film has the characteristics of high flexibility, high tearing strength, high barrier property, drop resistance, attractive appearance, novelty and the like, the puncture index of the co-extrusion composite film can reach 15N, the water resistance reaches 5 g/square meter 24h, and the oxygen resistance reaches 0.5/mL/MPa/square meter 24h; however, the existing fresh corn coextrusion composite film package has the problems of pleatThe corn is easy to leak air caused by friction or collision at the crease, the corn is moldy and deteriorated, the corn taste and mouthfeel are deteriorated due to poor barrier property, and the flavor and color difference are preserved.
Disclosure of Invention
The utility model provides a high-toughness high-barrier co-extrusion composite packaging bag for corn packaging, which aims to solve the problem that air leakage is easy to occur in the existing fresh corn packaging.
The bag body 1 of the high-toughness high-barrier co-extrusion composite packaging bag for corn packaging is a co-extrusion composite film, and the two side edges and the bottom edge of the bag body 1 are heat-sealing edges 2; the co-extrusion composite film consists of a first nylon layer 3, a second nylon layer 4, a nylon layer 5 with a silicon dioxide coating, an EVOH layer 6, an adhesive resin layer 7, a bubble film layer 8, a yellow mother material layer 9 and a heat sealing layer 10; the bag body 1 is provided with a first nylon layer 3, a second nylon layer 4, a nylon layer 5 with a silicon dioxide coating, an EVOH layer 6, an adhesive resin layer 7, a bubble film layer 8, a yellow mother material layer 9 and a heat sealing layer 10 from outside to inside in sequence; the silica coating layer of the nylon layer 5 with the silica coating layer in the co-extrusion composite film is arranged towards the second nylon layer 4.
The principle and the beneficial effects of the utility model are as follows:
the bag body 1 of the high-toughness high-barrier co-extrusion composite packaging bag for corn packaging adopts the co-extrusion composite film, and the first nylon layer 3 and the second nylon layer 4 in the co-extrusion composite film have good puncture resistance, flexibility and tearing resistance, and can play a good role in physical and mechanical properties of a film as a surface layer; the nylon layer 5 with the silicon dioxide coating has high barrier property and excellent water resistance and oxygen resistance; the EVOH (ethylene/vinyl alcohol copolymer) layer 6 has oxygen and water resistance, and can improve the barrier property of the coextrusion composite film; the bubble film layer 8 has the functions of buffering, high-grade and novel appearance and cost reduction; the yellow mother material layer 9 has the effect of blocking ultraviolet rays, prolongs the shelf life of the product, and has more attractive color close to the color of corn; the high toughness and high barrier property in the co-extrusion composite film can bear damage and air leakage caused by friction or impact at the folds of the corn bags, so that fresh corn can be kept for 12 months, the original taste can be kept, the corn does not change color, and the requirements of customers and consumers are met.
Drawings
Fig. 1 is a schematic structural view of a bag 1 in embodiment 1;
FIG. 2 is a cross-sectional view of the coextruded composite film of example 1.
Detailed Description
The technical scheme of the utility model is not limited to the specific embodiments listed below, and also comprises any reasonable combination of the specific embodiments.
The first embodiment is as follows: the bag body 1 of the high-toughness high-barrier co-extrusion composite packaging bag for corn packaging is a co-extrusion composite film, and the two side edges and the bottom edge of the bag body 1 are heat-sealing edges 2; the co-extrusion composite film consists of a first nylon layer 3, a second nylon layer 4, a nylon layer 5 with a silicon dioxide coating, an EVOH layer 6, an adhesive resin layer 7, a bubble film layer 8, a yellow mother material layer 9 and a heat sealing layer 10; the bag body 1 is provided with a first nylon layer 3, a second nylon layer 4, a nylon layer 5 with a silicon dioxide coating, an EVOH layer 6, an adhesive resin layer 7, a bubble film layer 8, a yellow mother material layer 9 and a heat sealing layer 10 from outside to inside in sequence; the silica coating layer of the nylon layer 5 with the silica coating layer in the co-extrusion composite film is arranged towards the second nylon layer 4.
The first nylon layer 3 and the second nylon layer 4 in the co-extrusion composite film adopted by the bag body 1 of the high-toughness high-barrier co-extrusion composite packaging bag for corn packaging have good puncture resistance, flexibility and tearing resistance, and can play a good role in physical and mechanical properties of a film as a surface layer; the nylon layer 5 with the silicon dioxide coating has high barrier property and excellent water resistance and oxygen resistance; the EVOH ethylene/vinyl alcohol copolymer layer 6 has oxygen and water resistance, and can improve the barrier property of the co-extrusion composite film; the bubble film layer 8 has the functions of buffering, high-grade and novel appearance and cost reduction; the yellow mother material layer 9 has the effect of blocking ultraviolet rays, prolongs the shelf life of the product, and has more attractive color close to the color of corn; the high toughness and high barrier property in the co-extrusion composite film can bear damage and air leakage caused by friction or impact at the folds of the corn bags, so that fresh corn can be kept for 12 months, the original taste can be kept, the corn does not change color, and the requirements of customers and consumers are met.
The second embodiment is as follows: the first difference between this embodiment and the specific embodiment is that: the thickness of the first nylon layer 3 is 14-16 mu m.
And a third specific embodiment: this embodiment differs from the first or second embodiment in that: the thickness of the second nylon layer 4 is 14-16 mu m.
The specific embodiment IV is as follows: this embodiment differs from one of the first to third embodiments in that: the thickness of the nylon layer 5 with the silicon dioxide coating is 14-16 mu m.
Fifth embodiment: this embodiment differs from one to four embodiments in that: the EVOH layer 6 has a thickness of 11 to 13. Mu.m.
Specific embodiment six: this embodiment differs from one of the first to fifth embodiments in that: the thickness of the bubble film layer 8 is 19-21 μm.
Seventh embodiment: this embodiment differs from one of the first to sixth embodiments in that: the thickness of the yellow mother material layer 9 is 11-13 μm.
Eighth embodiment: this embodiment differs from one of the first to seventh embodiments in that: the thickness of the adhesive resin layer 7 is 11 to 13 μm.
Detailed description nine: this embodiment differs from one to eight of the embodiments in that: the thickness of the heat-seal layer 10 is 39-41 μm.
Example 1:
the bag body 1 of the high-toughness high-barrier co-extrusion composite packaging bag for corn packaging is a co-extrusion composite film, and the two side edges and the bottom edge of the bag body 1 are heat-sealing edges 2; the co-extrusion composite film consists of a first nylon layer 3, a second nylon layer 4, a nylon layer 5 with a silicon dioxide coating, an EVOH layer 6, an adhesive resin layer 7, a bubble film layer 8, a yellow mother material layer 9 and a heat sealing layer 10; the bag body 1 is provided with a first nylon layer 3, a second nylon layer 4, a nylon layer 5 with a silicon dioxide coating, an EVOH layer 6, an adhesive resin layer 7, a bubble film layer 8, a yellow mother material layer 9 and a heat sealing layer 10 from outside to inside in sequence; the silicon dioxide coating in the nylon layer 5 with the silicon dioxide coating in the coextrusion composite film is arranged towards the second nylon layer 4; the thickness of the first nylon layer 3 is 15 mu m, the thickness of the second nylon layer 4 is 15 mu m, the thickness of the nylon layer 5 with a silicon dioxide coating is 15 mu m, the thickness of the EVOH layer 6 is 12 mu m, the thickness of the bubble film layer 8 is 20 mu m, the thickness of the yellow mother material layer 9 is 12 mu m, the thickness of the adhesive resin layer 7 is 12 mu m, and the thickness of the heat sealing layer 10 is 40 mu m;
the preparation method of the high-toughness high-barrier co-extrusion composite packaging bag for corn packaging comprises the following steps:
step one: producing a co-extrusion film by using a multi-layer co-extrusion film blowing machine, wherein the second nylon layer 4 adopts 100% nylon, the EVOH layer 6 adopts 100% EVOH master batch, the bubble film layer 8 adopts 5% foaming master batch and 95% polyethylene resin for mixing according to the mass ratio, and the yellow master batch layer 9 adopts 10% yellow master batch and 90% polyethylene resin for mixing according to the mass ratio; the heat sealing layer 10 is made of 100% polyethylene, and is rolled into a film to obtain a multilayer co-extrusion blown film;
step two: compounding the multilayer co-extrusion blown film obtained in the step one with a nylon film and a silicon dioxide plated nylon film 4 through an adhesive by using a solvent-free compounding machine, collecting coiled materials, placing the coiled materials in a curing chamber at 45 ℃ for 48 hours, and completely curing the adhesive to obtain a co-extrusion composite film;
step three: and (3) preparing the coextrusion composite film prepared in the step two into a three-edge sealing bag by using a bag making machine.
Fig. 1 is a schematic structural view of a bag body 1 in example 1, and fig. 2 is a cross-sectional view of a co-extrusion composite film in example 1. The bag body 1 of the packaging bag has good puncture resistance, flexibility, tearing resistance and high barrier property, also has good buffering performance and ultraviolet blocking function, is more attractive, can prolong the shelf life of the product, and ensures that the fresh corn is kept fresh for 12 months.
Claims (9)
1. A high-toughness high-barrier co-extrusion composite packaging bag for corn packaging is characterized in that: the bag body (1) of the high-toughness high-barrier co-extrusion composite packaging bag for corn packaging is a co-extrusion composite film, and the two side edges and the bottom edge of the bag body (1) are heat-sealed edges (2); the co-extrusion composite film consists of a first nylon layer (3), a second nylon layer (4), a nylon layer (5) with a silicon dioxide coating, an EVOH layer (6), an adhesive resin layer (7), a bubble film layer (8), a yellow mother material layer (9) and a heat sealing layer (10); the bag body (1) is provided with a first nylon layer (3), a second nylon layer (4), a nylon layer (5) with a silicon dioxide coating, an EVOH layer (6), an adhesive resin layer (7), a bubble film layer (8), a yellow mother material layer (9) and a heat sealing layer (10) from outside to inside in sequence; the silicon dioxide coating in the nylon layer (5) with the silicon dioxide coating in the co-extrusion composite film is arranged towards the second nylon layer (4).
2. The high-toughness high-barrier co-extruded composite packaging bag for corn packaging according to claim 1, wherein: the thickness of the first nylon layer (3) is 14-16 mu m.
3. The high-toughness high-barrier co-extruded composite packaging bag for corn packaging according to claim 1, wherein: the thickness of the second nylon layer (4) is 14-16 mu m.
4. The high-toughness high-barrier co-extruded composite packaging bag for corn packaging according to claim 1, wherein: the thickness of the nylon layer (5) with the silicon dioxide plating layer is 14-16 mu m.
5. The high-toughness high-barrier co-extruded composite packaging bag for corn packaging according to claim 1, wherein: the EVOH layer (6) has a thickness of 11-13 [ mu ] m.
6. The high-toughness high-barrier co-extruded composite packaging bag for corn packaging according to claim 1, wherein: the thickness of the bubble film layer (8) is 19-21 mu m.
7. The high-toughness high-barrier co-extruded composite packaging bag for corn packaging according to claim 1, wherein: the thickness of the yellow mother material layer (9) is 11-13 mu m.
8. The high-toughness high-barrier co-extruded composite packaging bag for corn packaging according to claim 1, wherein: the thickness of the adhesive resin layer (7) is 11-13 mu m.
9. The high-toughness high-barrier co-extruded composite packaging bag for corn packaging according to claim 1, wherein: the thickness of the heat sealing layer (10) is 39-41 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322246894.XU CN220577887U (en) | 2023-08-21 | 2023-08-21 | High-toughness high-barrier co-extrusion composite packaging bag for corn packaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322246894.XU CN220577887U (en) | 2023-08-21 | 2023-08-21 | High-toughness high-barrier co-extrusion composite packaging bag for corn packaging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220577887U true CN220577887U (en) | 2024-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322246894.XU Active CN220577887U (en) | 2023-08-21 | 2023-08-21 | High-toughness high-barrier co-extrusion composite packaging bag for corn packaging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220577887U (en) |
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2023
- 2023-08-21 CN CN202322246894.XU patent/CN220577887U/en active Active
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